摘要
在高强度人类活动影响下,近海环境污染问题日益严重,实施陆源污染物排海总量控制是社会经济可持续发展的必然需求。文章基于三维、无结构网格、有限体积方法的水动力(FVCOM)模型的DIN三维水动力-水质模型,在2012、2013年的监测结果对模型校正的基础上,采用自净过程积分方法,计算研究了江苏北部灌河口邻近海域沿岸主要入海河流的DIN分配容量。结果表明,苏北灌河口附近10条入海河流的DIN分配容量合计约为2 200 t/a。其中,废黄河单元分配容量最大,约为1 000 t/a;中山河单元最低,约为180 t/a。进一步根据现状排放量分析表明,废黄河、排淡河单元还有剩余容量,而灌河和车轴河河流单元均需要进行大幅削减,都相当于当前入海负荷的80%以上。
Guan River Estuary and adjacent Coastal area （GREC） suffers from serious pollution and eutrophic problems. It is urgent to reduce the land-based load for the social economy sustainable development. In order to solve these problems, a three-dimensional water quality model based on Finite Volume Community Ocean Model （FVCOM） was constructed to estimate the total maximum allocated loads （TMAL） of COD in GREC, which was corrected by the monitoring results in 2012 and 2013. According to the model, to achieve marine functional zoning requirements in Jiangsu Province, the TMAL of CODMn in one year were approximately 2 200 t/a tons based on the method of integrating self-purification process, in which Feihuang River accounted for the largest, about 1000 t/a, while Zhongshan River the lowest about 180 t/a. Based on the TMAL, the loads of CODMn, about 80% of current CODMn loads respectively in GREC need to be reduced for Chezhou River and Guan River; Paidan River and Feihuang River can be used to discharge more CODMn, including the loads from Chezhou River and Guan River.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2015年第9期162-168,共7页
Environmental Science & Technology
基金
海域使用金使用项目(江苏省重点海域海洋环境容量研究)
关键词
总量控制
DIN
灌河口
分配容量
三维水质模型
total load control
dissolved inorganic nitrogen （DIN）
Guan River Estuary
total maximum allocated loads
three-dimensional hydrodynamics water quality model
